Spiral Chute
No-Power Gravity Separation Spiral Chute for Fine Gold, Tin, Tungsten & Tailings Mineral Recovery
Spiral Chute is a no-power gravity separation mining equipment designed for fine-grained heavy mineral pre-concentration and tailings recovery. Adopting gravity & centrifugal composite separation principle, it uses water flow film and spiral rotary motion to separate minerals by density difference. Featuring zero power consumption, large capacity, low cost and maintenance-free, it is the best pre-separation equipment matching shaking tables and jiggers for mineral processing plants.
Large Capacity
Simple Operation
Maintenance-Free
What is Spiral Chute?
Most traditional fine mineral separation equipment such as shaking tables and flotation machines require continuous power input and high operating costs. For large-volume rough sorting and pre-concentration of low-grade raw ore and tailings, high-precision equipment leads to serious cost waste and low processing efficiency. Meanwhile, a large number of fine heavy minerals are abandoned in tailings due to lack of efficient pre-sorting equipment, resulting in severe resource loss.
Our Gravity Spiral Chute perfectly solves the above pain points. It requires no motor power during operation, relying purely on gravity water flow and spiral centrifugal force to complete mineral layering and separation. It features large hourly processing capacity, wide adaptability to ore concentration and particle size, stable sorting indicators and almost zero operating cost. It is widely used for rough pre-separation before fine sorting and secondary recovery of mine tailings, greatly improving plant production efficiency and economic benefits.
Core Structural Composition & Advantages
1. High-Precision Spiral Groove Body
The spiral groove adopts integrated molding design with smooth and accurate curvature and gradient. The unique spiral rotary track forms stable water film flow field and centrifugal force field, providing precise layering conditions for fine minerals. It effectively avoids turbulent flow and material disorder, ensuring stable and uniform separation effect for a long time.
2. Wear-Resistant Anti-Corrosion Liner
The inner wall of the spiral groove is paved with high-strength wear-resistant lining material, which resists long-term slurry scouring, abrasion and corrosion. It will not deform or wear after long-term continuous operation, maintaining stable groove body precision. The durable structure greatly extends service life and reduces replacement frequency.
3. Uniform Feeding & Water Distribution System
Equipped with professional ore distributor and water distributor, it realizes uniform pulp dispersion and stable water flow supplement. It can adapt to ore feeding concentration and particle size fluctuations within a large range, avoiding material accumulation and local flow velocity difference, ensuring consistent separation effect of each spiral layer.
4. Multi-Layer Combined Compact Structure
Adopts multi-layer three-dimensional layout design (single/double/triple/four layers optional), which greatly saves floor space compared with flat sorting equipment. The integrated support frame has stable structure and strong wind and shock resistance, convenient for on-site assembly and centralized layout of production lines.
5. Classified Discharge & Adjustable Splitter
The bottom is equipped with adjustable mineral splitter, which can accurately separate concentrate, middlings and tailings. Users can adjust the splitting ratio according to ore grade and beneficiation requirements to flexibly control enrichment ratio and recovery rate, adapting to different mineral processing standards.
6. Zero-Power Passive Operation Structure
No motor, no transmission parts, no power consumption during operation. The whole machine has no vulnerable mechanical parts, basically realizing maintenance-free operation. It eliminates electric energy consumption and daily maintenance costs, with extremely low long-term operating cost.
Core Product Advantages of Spiral Chute
1. Zero Power Consumption, Ultra-Low Operating Cost
Different from all motor-driven beneficiation equipment, the spiral chute relies entirely on natural gravity and water flow for separation, with zero electricity consumption. There are no mechanical transmission vulnerable parts, almost no maintenance cost, no reagent consumption, greatly reducing the comprehensive production cost of the mineral processing plant.
2. Large Processing Capacity & High Efficiency
The multi-layer three-dimensional structure greatly improves unit area processing capacity. Compared with shaking tables and other flat sorting equipment, the hourly processing capacity is several times higher. It is very suitable for large-volume rough ore pre-separation and tailings recovery, effectively improving overall plant throughput.
3. High Enrichment Ratio & Stable Recovery
The stable spiral flow field realizes accurate density layering of fine minerals. It has excellent sorting effect on fine-grained gold, tin, tungsten, ilmenite and other heavy minerals, with high primary enrichment ratio. It can effectively discard a large amount of gangue in advance, reduce subsequent fine sorting pressure and improve final concentrate grade.
4. Wide Adaptability & Strong Fault Tolerance
It can stably process minerals with particle size of 0.04-2mm, and adapt to large fluctuations of ore feeding concentration and mud content. It supports both wet gravity separation and dry sorting, suitable for various complex ore properties and on-site working conditions, with strong on-site adaptability.
5. Simple Operation & Maintenance-Free
The equipment has no complex electrical control system and transmission structure. After one-time installation and debugging, it can run stably for a long time without special personnel supervision. The operation threshold is extremely low, saving a lot of labor management costs for the mine.
6. Green & Environmentally Friendly
Pure physical gravity separation process, no chemical reagents added, no pollution discharge. The sorting water can be recycled and reused, meeting global green mining environmental protection standards. It is an ideal energy-saving and emission-reduction equipment for modern mineral processing plants.
Working Principle & Complete Separation Flow of Spiral Chute
Core Working Principle
The Spiral Chute adopts gravity + centrifugal composite physical separation technology. After uniform pulp feeding, mineral particles flow downward along the spiral groove with water flow. Under the dual action of gravity, centrifugal force and water flow friction, heavy high-density minerals sink to the inner layer of the spiral groove and move downward stably, while light gangue minerals are pushed to the outer layer by centrifugal force and discharged with overflow water. Different density minerals are completely layered and separated to realize efficient rough concentration and tailings discarding.
Standard Processing Flow
Ore Slurry Uniform Mixing → Gravity Feeding → Spiral Rotary Layered Separation → Heavy Mineral Inner Groove Collection → Light Gangue Outer Overflow Discharge → Concentrate/Middlings/Tailings Classified Output
Application Scenarios & Supporting Process of Spiral Chute
Main Application Fields
Spiral Chute is widely used for rough pre-separation and tailings recovery of various heavy minerals. It is the core pre-sorting equipment in gravity separation production lines, suitable for fine gold placer, tin tungsten ore, ilmenite, hematite, fluorite and rare earth minerals. It can be used for independent rough concentration or matched with shaking tables, jiggers and other fine sorting equipment to form a complete high-efficiency gravity separation process.
Best Matching Process Flow
Ore Crushing & Grinding → Pulp Mixing → Spiral Chute Pre-Separation & Gangue Discarding → Shaking Table Fine Separation → High-Grade Concentrate Collection → Tailings Secondary Recovery
Global Project Cases of Spiral Chute
Case 1: Placer Gold Pre-Separation Project | Ghana Gold Mine
Project Info: The customer’s placer gold has low raw ore grade and large processing volume. Traditional single shaking table sorting has low efficiency and high power consumption. Our multi-layer spiral chute is used for pre-gangue discarding, removing a large amount of light gangue in advance, reducing subsequent shaking table processing pressure. The zero-power design greatly reduces daily power consumption, improving gold output while cutting production costs.
Case 2: Tin Tungsten Ore Pre-Concentration Project | Myanmar Mineral Plant
Project Info: Tin and tungsten ore have fine particle size and low monomer dissociation degree. The customer adopts spiral chute for rough separation, effectively enriching valuable minerals and discarding useless tailings. The matched shaking table fine sorting process significantly improves final concentrate grade and recovery rate, solving the problems of low efficiency and high waste in traditional full-process fine sorting.
Case 3: Ilmenite Tailings Recovery Project | Vietnam Non-Metallic Mine
Project Info: A large amount of fine ilmenite remains in the production tailings. Our spiral chute performs secondary recovery of tailings fine minerals, with large processing capacity and stable sorting effect. It turns waste tailings into high-value finished minerals, creating additional economic benefits for the customer with low investment and zero operating cost.
FAQs of Spiral Chute
Q1: What is a spiral chute used for in mining?
A: Spiral chute is a zero-power gravity separation equipment, mainly used for pre-separation, rough concentration and tailings recovery of fine-grained heavy minerals. It is usually matched with shaking tables to improve overall beneficiation efficiency and reduce production costs.
Q2: Does the spiral chute need electric power to work?
A: No. The whole machine has no motor and transmission device, relying entirely on gravity water flow and centrifugal force to complete mineral separation, with zero power consumption during operation, which is extremely energy-saving.
Q3: What particle size minerals can spiral chute process?
A: It is suitable for 0.04-2mm fine and medium-grained heavy minerals, with excellent recovery effect on ultra-fine minerals that are difficult to pre-sort by conventional equipment.
Q4: What is the difference between spiral chute and shaking table?
A: Spiral chute is used for large-volume rough pre-separation with zero power and large capacity; shaking table is used for high-precision fine separation with high concentrate grade. The two are used together to achieve the best beneficiation effect of roughing first and then refining.
Q5: Is the spiral chute easy to maintain?
A: Yes. No mechanical vulnerable parts, no electrical failure risk. After installation and debugging, it can run stably for a long time without daily maintenance, realizing true maintenance-free operation.
Technical Parameters of Spiral Chute
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Item
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Specification
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Machine Model
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5LL Series Spiral Chute
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Layer Structure
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Single / Double / Triple / Four Layers Optional
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Processing Capacity
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1.5 – 8 TPH Per unit
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Applicable Particle Size
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0.04 – 2mm Fine & medium heavy minerals
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Spiral Diameter
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600mm / 900mm / 1200mm Customizable
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Power Consumption
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0 KW Zero power operation
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Water Consumption
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Recyclable circulating water
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Sorting Type
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Gravity & centrifugal composite physical separation
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Output Material
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Concentrate, Middlings, Tailings
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Applicable Minerals
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Gold, tin, tungsten, ilmenite, hematite, fluorite, rare earth ore
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Core Features
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Zero power, large capacity, maintenance-free, high enrichment ratio
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Get Custom Spiral Chute Solution
Our Spiral Chute breaks through the high-cost pain point of traditional power-driven beneficiation equipment, with core advantages of zero power consumption, large processing capacity, maintenance-free and high enrichment ratio. It provides efficient and low-cost pre-separation and tailings recovery solutions for global mineral processing plants, perfectly matching shaking table fine separation process to maximize mine resource utilization and economic benefits.
Contact us now for free ore testing, model selection and accurate customized quotation!
